Tropical Storm Iselle became the first tropical storm in 22 years to hit Hawaii on Friday, making landfall on the Big Island with winds of 60 mph, according to The Weather Channel and the Central Pacific Hurricane Center.

The National Weather Service downgraded the storm from a hurricane earlier Friday as rain, strong winds and high surf lashed the eastern edge of the state.

Hurricane Julio, a Category 3 storm, is about 1,000 miles behind in the Pacific.

Across Hawaii, people have flowed into emergency shelters, airlines have canceled flights and the National Guard is at the ready.

On Thursday, long lines formed at some local stores, and bottled water and other hunker-down items flew off shelves.

Roger Acpal, a manager at a Costco near downtown Honolulu, said sales are brisk "but we are able to keep up with demand so far.''

"We got slammed as soon as the announcement about the hurricane came out," Acpal said. "Water, canned goods, generators and camping stoves were what people were buying."

Cher Takemoto, a teacher at Moanalua High School in Honolulu, said: "We've had so many tsunami warnings where nothing happened. Maybe this time it's real. We're praying for the best."